Zhang Ranran, Du Shaoting
a College of Environmental Science and Engineering, Zhejiang Gongshang University , Hangzhou , China.
Plant Signal Behav. 2016;11(4):e1165380. doi: 10.1080/15592324.2016.1165380.
The concentration of atmospheric CO2 is predicted to double by the end of this century. The response of higher plants to an increase in atmospheric CO2 often includes a change in nitrate reductase (NR) activity. In a recent study, we showed that, under elevated CO2 levels, NR induction in low-nitrate plants and NR inhibition in high-nitrate plants are regulated by nitric oxide (NO) generated via nitric oxide synthases. This finding provides an explanation for the diverse responses of plants to elevated CO2 levels, and suggests that the use of nitrogen fertilizers on soil will have a major influence on the nitrogen assimilation capacity of plants in response to CO2 elevation.
预计到本世纪末，大气中二氧化碳的浓度将翻倍。高等植物对大气中二氧化碳增加的反应通常包括硝酸还原酶（NR）活性的变化。在最近的一项研究中，我们表明，在二氧化碳浓度升高的情况下，低硝酸盐植物中NR的诱导和高硝酸盐植物中NR的抑制是由通过一氧化氮合酶产生的一氧化氮（NO）调节的。这一发现为植物对二氧化碳浓度升高的不同反应提供了解释，并表明在土壤上使用氮肥将对植物响应二氧化碳升高时的氮同化能力产生重大影响。
